The company plans to use the funding to support several ongoing efforts, including the development of a technology demonstration satellite called ELSA-d. That spacecraft, scheduled for launch in early 2020 on a Soyuz rocket, will feature “target” and “chaser” satellites to demonstrate rendezvous and proximity operations. The target spacecraft is being built by British smallsat developer Surrey Satellite Technology Ltd. under a contract announced last November.

The funding will support scaling up an operations center Astroscale established in the United Kingdom in 2017 that also handles engineering, procurement and business development. Astroscale said it plans to establish an office in the United States in 2019.

The article notes also that much of this money comes from Japanese investors, including Mitsubishi, and reflects a growing interest in Japan in private commercial space.

A British test satellite has successfully used a net to capture a cubesat target, demonstrating the technology that someday could be used to clean space junk from Earth orbit.

“It worked just as we hoped it would,” said Prof Guglielmo Aglietti, director of the Surrey Space Centre. “The target was spinning like you would expect an uncooperative piece of junk to behave, but you can see clearly that the net captures it, and we’re very happy with the way the experiment went.”

If this were a real capture, the net would be tethered to the deploying satellite, which would then tug the junk out of the sky. As this was just a demonstration, the net and the box (which was actually pushed out from RemoveDebris to act as a target) will be allowed to fall to Earth on their own. Their low altitude means it should take only a couple of months before they burn up in the atmosphere.

I have embedded below the fold a video showing the net capture. It is quite spectacular. This was one of three different experiments on RemoveDebris that are testing space junk removal methods. The next is the use of a harpoon.» Read more

In order to do additional safety reviews NASA has ordered a six-month delay, at the minimum, in the launch of test space junk removal satellite.

“Nothing of this size has ever been launched from the ISS before,” said Jason Forshaw, RemoveDebris project manager at the University of Surrey’s Surrey Space Centre, which leads the consortium [that built the satellite]. “Most of the things they are launching from there are cubesats, much smaller objects, 10 [kilograms] or so,” Forshaw said. “As you can imagine, we are progressing through the safety reviews and we are just going through those at the moment.”

The article also includes some discussion of the legal limitations of salvage in space, once again due to the limits in the Outer Space Treaty.

Capitalism in space: A private company, Leo Labs, has built a high resolution space radar facility in Midland, Texas, aimed at providing satellite companies precise location information of their orbiting satellites as well as the space junk that might threaten them.

It is not clear from the article or the company’s webpage whether they are funded by the federal government or by private capital investment. Up until now this data has been routinely gathered by the U.S. military, though obtaining it has I think been somewhat difficult due to security concerns. It seems this company is trying to compete with the government in offering a better data stream that is also easier to obtain.

The Joint Space Operations Center, which is the Defense Department’s nerve center for space operations and tracks space objects from Vandenberg Air Force Base in California, tweeted July 19 that it had identified a debris-causing event related DigitalGlobe’s WorldView-2 satellite.

The amazing thing about this is that the satellite is still functional, and to prove it the company has already released an image produced after the event.

Presented at the Royal Society’s summer science exhibition this week, and led by the Surrey Space Centre, the systems included a net, harpoon and drag sail, which scientists have incorporated into a test platform for launch into space. The platform will also carry “artificial junk” in the form of small satellites known as CubeSats.

Once the platform is launched into space, a CubeSat will be released. “The CubeSat will be ejected from the platform and then we’ll fire the net at it,” said Forshaw. The CubeSat, hopefully encased in the net, will then fall back towards Earth and burn up. In the case of the harpoon, the researchers have attached a target made of spacecraft material to a carbon-fibre boom that extends from the platform. “When the harpoon impacts it, it is actually going to simulate a real spacecraft being hit,” said Forshaw.

At the end of the mission the third system, a drag sail will be deployed. Attached to the platform, the sail will speed up its return to Earth where it will burn up in the atmosphere. Similar systems have been proposed for future satellites to allow them to be disposed of without leaving space junk.

With the Chinese, NASA, and private companies all developing robotic missions to either clean up space junk or repair satellites, the competition to do this work is going to get very intense in the next decade.

There is a video at the link showing the capture. They have also tested this technology on a vomit comet, and hope to launch a full scale model by 2023.

A research team at JPL has concluded that the unidentified piece of space junk that had been in lunar space but crashed to Earth in November was likely the engine module used by the 1998 Lunar Prospector mission.

The junk’s identity is by no means certain, but the “leading candidate” is the translunar injection module of Lunar Prospector, says Paul Chodas, an asteroid tracker at NASA’s Jet Propulsion Laboratory in Pasadena, California. The module nudged the probe out of Earth orbit and then detached from the main spacecraft, which orbited the Moon for 19 months before it was deliberately slammed into the lunar south pole in July 1999.

Speculation about the source of the debris, known as WT1190F, ran rampant even before it plummeted through the atmosphere on 13 November. The only artificial object to make an uncontrolled re-entry at a precisely predicted place and moment, it presented a unique chance to witness such an event in real time. Researchers took advantage of the opportunity, monitoring the debris from a chartered jet as well as from ground-based observatories.

Though scientists have not yet identified it, the piece of space junk discovered last month in an unusual orbit with a predictable moment of decay has burned up over the Indian Ocean,

Estimated to measure 1–2 metres across, WT1190F had circled the Earth–Moon system since at least 2009, says independent astronomy-software developer Bill Gray, who has been working with NASA to track the debris. It most likely came off a recent lunar spacecraft, but it is not out of the question that it could have dated to the Apollo era.

In at least one case, scientists were able to image the object as it burned up. The data from this will allow them to determine its chemical composition, which in turn might help them identify it.

A piece of unidentified space junk, discovered in a long elliptical orbit going out far beyond the Moon, has been calculated to hit the Earth over the Indian Ocean on November 13.

WT1190F was detected by the Catalina Sky Survey, a program aimed at discovering asteroids and comets that swing close to Earth. At first scientists didn’t know what to make of this weird body. But they quickly computed its trajectory, after collecting more observations and unearthing 2012 and 2013 sightings from telescope archives, says independent astronomy software developer Bill Gray, who has been working to track the debris with NASA’s Jet Propulsion Laboratory in Pasadena, California.

WT1190F travels a highly elliptical orbit, swinging out twice as far as the Earth-Moon distance, Gray says. Gray’s calculations show that it will hit the Earth at 6:20 UTC, falling about 65 kilometres off the southern tip of Sri Lanka. Much if not all of it will burn up in the atmosphere, but “I would not necessarily want to be going fishing directly underneath it,” Gray says.

What makes the object interesting is that they don’t know when it was launched or how it got in the orbit it is in. It could even be something from the Apollo lunar missions.

The manned Soyuz capsule bringing three astronauts to ISS was forced to make a maneuver this morning to avoid a collision with a fragment from a Japanese rocket launched in 1989.

While space junk is an increasing problem, for a object to threaten a manned capsule making maneuvers in low Earth orbit is extremely rare. It appears from the story however that U.S. and Russian trackers thought there was a very good chance of an actual collision and took action to avoid it.

Engineers are puzzling over the release of debris from two separate Iridium satellites last year, with each even suggesting the satellites were hit by very small pieces of space junk.

The U.S. Joint Space Operations Center detected 10 pieces of debris from the Iridium 47 satellite June 7, 2014. Some of the objects flew away from Iridium 47 at up to 80 meters per second — nearly 180 mph — into orbits almost 200 miles above the satellite, suggesting an explosion or collision triggered their creation. Another Iridium spacecraft — Iridium 91 — produced four debris fragments Nov. 30, according to U.S. military tracking data. “In contrast to the previous Iridium breakup, however, these pieces were produced with minimal delta velocity and remained in the vicinity to the parent spacecraft for some time,” NASA officials wrote.

In both cases, the satellites showed no signs of a breakup and remain operational, according to Iridium Communications, a Virginia-based company that uses a fleet of spacecraft nearly 500 miles above Earth for mobile voice and data services.

The source says that no coolant has escaped from the system and that NASA engineers are analyzing images to assess the damage.

Readers should be aware that I have tried without success to find the NASA website the story claims is the source for this information. Moreover, this story is reported nowhere in the U.S. press, and it is strange for a NASA website to report something like this and it not be quickly picked up by the U.S. press.

Thus, I am not entirely convinced yet that this story is accurate.

Update: a commenter below has provided this link to a subsequent post at nasaspaceflight about the impact.

The U.S. military has awarded Lockheed Martin the contract to build the next generation radar system that will be used to track objects in orbit.

While the military needs this specifically for surveillance and to track the orbiting spacecraft of other countries, it is also the system that everyone in the world uses to identify orbiting space junk, including small objects like lost tools.

Both components of this story are significant. First, a company has gotten the necessary financing to build the spacecraft, proving that there is profit to be made in the removal of space junk. Second, the launch system is simple and reusable, and will lower the cost of getting small payloads into orbit significantly. And it appears it is being built.

NASA revealed Tuesday that last April the Fermi Gamma-Ray Telescope barely avoided a collision with an abandoned Russian satellite.

Fermi mission scientists first learned of the space collision threat on March 29, 2012 when they received a notice that the space telescope and Cosmos 1805 would miss each other by just 700 feet (213.4 meters). The mission team monitored the situation over the next day and it became clear that the two spacecraft, traveling in different orbits, would zip through the same point in space within 30 milliseconds of one another, NASA officials said.

They used Fermi’s thrusters to shift its orbit enough so the two spacecraft missed each other by 6 miles.

“Not simply about one mission, [Genesis] is also the history of America’s quest for the moon… Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America’s greatest human triumphs.”
–San Antonio Express-News

Radio: October 31, 2018, 6:05-6:15 pm (Central), Pratt on Texas with Robert Pratt, aired on 790-AM KFYO in Lubbock, 1470-AM KYYW in Abilene, and 1290-AM KWFS in Wichita Falls. Also available here and here